APA (7th ed.) Citation

Gerkan, A. v. Zu den Problemen des Petrusctrabes. [editor no identificat].

Chicago Style (17th ed.) Citation

Gerkan, Armin von. Zu Den Problemen Des Petrusctrabes. [Lloc de publicació no identificat]: [editor no identificat].

MLA (9th ed.) Citation

Gerkan, Armin von. Zu Den Problemen Des Petrusctrabes. [editor no identificat].

Warning: These citations may not always be 100% accurate.